Use of nitrooxyderivative of drug for the treatment of muscular dystrophies

A method of treating muscular dystrophies comprising administering to a subject a nitric oxide releasing compound of formula (Ia)

• M-X—Y—ONO2 (Ia)
• or enantiomers or diastereoisomers thereof, wherein in the general formula (Ia), M, X and Y have the following meanings:
• M is a residue
• X is —O—, —S— or —NR1—, wherein R1 is H or linear or branched C1-C6 alkyl;
• Y is a bivalent radical having the following meanings:
• straight or branched C1-C20 alkylene being optionally substituted with one or more of the substituents selected from the group consisting of:
• halogen atoms, hydroxy, —ONO2 and T, wherein T is —OC(O)(C1-C10 alkyl)-ONO2 or —O(C1-C10 alkyl)-ONO2;
• or
• —C5-C7 cycloalkylene group optionally substituted with linear or branched C1-C10 alkyl group.